190823161994 has 8 divisors (see below), whose sum is σ = 303072080868. Its totient is φ = 89799135040.

The previous prime is 190823161973. The next prime is 190823162027. The reversal of 190823161994 is 499161328091.

It can be written as a sum of positive squares in 2 ways, for example, as 150456324769 + 40366837225 = 387887^2 + 200915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2806222937 + ... + 2806223004.

Almost surely, 2^190823161994 is an apocalyptic number.

190823161994 is a deficient number, since it is larger than the sum of its proper divisors (112248918874).

190823161994 is a wasteful number, since it uses less digits than its factorization.

190823161994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5612445960.

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 190823161994 in words is "one hundred ninety billion, eight hundred twenty-three million, one hundred sixty-one thousand, nine hundred ninety-four".